Nguyen, Quoc Hung ; Ali, Mubarak ; Bayer, Veronika ; Neumann, Reinhard ; Ensinger, Wolfgang (2010)
Charge-selective transport of organic and protein analytes through synthetic nanochannels.
In: Nanotechnology, 21 (36)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We present an experimental demonstration of a synthetic nanoporous membrane suitable for charge-selective transport of ionic species. The surfaces and walls of synthetic nanochannels, fabricated in heavy ion-tracked polyethylene terephthalate membranes are negatively charged due to the presence of carboxylate moieties. These nanofilters discriminate and gate the transport of cations while inhibiting the passage of anions. The permselectivity of these membranes is reversed by converting the carboxylic moieties into terminated amino groups. The positively charged (aminated) membranes facilitate the transport of anions. Based on the same principle, charged biomolecules (bovine serum albumin and lysozyme) are successfully filtered through these membranes. These membranes also exhibit the phenomenon of ion concentration polarization.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Nguyen, Quoc Hung ; Ali, Mubarak ; Bayer, Veronika ; Neumann, Reinhard ; Ensinger, Wolfgang |
| Art des Eintrags: | Bibliographie |
| Titel: | Charge-selective transport of organic and protein analytes through synthetic nanochannels |
| Sprache: | Englisch |
| Publikationsjahr: | 10 September 2010 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nanotechnology |
| Jahrgang/Volume einer Zeitschrift: | 21 |
| (Heft-)Nummer: | 36 |
| URL / URN: | http://iopscience.iop.org/0957-4484/21/36/365701/ |
| Kurzbeschreibung (Abstract): | We present an experimental demonstration of a synthetic nanoporous membrane suitable for charge-selective transport of ionic species. The surfaces and walls of synthetic nanochannels, fabricated in heavy ion-tracked polyethylene terephthalate membranes are negatively charged due to the presence of carboxylate moieties. These nanofilters discriminate and gate the transport of cations while inhibiting the passage of anions. The permselectivity of these membranes is reversed by converting the carboxylic moieties into terminated amino groups. The positively charged (aminated) membranes facilitate the transport of anions. Based on the same principle, charged biomolecules (bovine serum albumin and lysozyme) are successfully filtered through these membranes. These membranes also exhibit the phenomenon of ion concentration polarization. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 24 Aug 2010 15:45 |
| Letzte Änderung: | 05 Mär 2013 09:36 |
| PPN: | |
| Sponsoren: | Q H Nguyen thanks the Gottlieb Daimler- und Karl Benz- Stiftung for financial support., M Ali and W Ensinger acknowledge financial support by the Beilstein-Institut, Frankfurt/Main, Germany, within the research collaboration NanoBiC. |
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